Connection pool with AS400

Hello, i have a prob creating connection pool via AS "wizard"
i've tried both com.ibm.as400.access.AS400JDBCDataSource and com.ibm.as400.access.AS400JDBCDriver
both doesnt work for me...
i have the following parameters:
<property name="hibernate.connection.driver_class">com.ibm.as400.access.AS400JDBCDriver</property>
<property name="hibernate.connection.password">xxxx</property>
<property name="hibernate.connection.username">xxx</property>
<property name="hibernate.connection.url">jdbc:as400://xx.xx.xx.xx</property>
<property name="hibernate.default_schema">ssss</property>
<property name="hibernate.default_catalog">ccccc</property>
How do i configure these to Sun AS connection pool?
Thank you in advance.

You can refer :
1) creating jdbc-connection-pool, jdbc-resource
http://docs.sun.com/app/docs/doc/819-4733/6n6s6u1bn?a=view
2) configuration for various database vendors
http://docs.sun.com/app/docs/doc/819-3658/6n5s5nklk?a=view
AS400 is not listed above, still it will work if the jdbc driver is jdbc-30 complaint.
You need to provide "datasource-classname" and necessary parameters like user, password, URL, server, databasename etc.,
Thanks,
-Jagadish

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http://download.oracle.com/docs/cd/B19306_01/server.102/b14220/integrat.htm#sthref3364

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Message was edited by:
ebangma

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I am also facing the same problem, please let me know if there any suggestions,
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sundaravel n

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at weblogic.jdbc.oci.xa.XAConnection.<init>(XAConnection.java:58)
at weblogic.jdbc.oci.xa.XADataSource.getXAConnection(XADataSource.java:601)
at weblogic.jdbc.common.internal.XAConnectionEnvFactory.makeConnection(XAConnectionEnvFactory.java:200)
at weblogic.jdbc.common.internal.XAConnectionEnvFactory.createResource(XAConnectionEnvFactory.java:57)
at weblogic.common.internal.ResourceAllocator.makeResources(ResourceAllocator.java:698)
at weblogic.common.internal.ResourceAllocator.<init>(ResourceAllocator.java:282)
at weblogic.jdbc.common.internal.ConnectionPool.startup(ConnectionPool.java:623)
at weblogic.jdbc.common.JDBCService.addDeployment(JDBCService.java:107)
at weblogic.management.mbeans.custom.DeploymentTarget.addDeployment(DeploymentTarget.java:329)
The trace file looks like this:
ORACLE XA: Version 8.1.5.0.0. RM name = 'Oracle_XA'.
113105.161:160.160.-1344514975:
xaoopen: xa_info=Oracle_XA+Acc=P/schamper/schamper+SesTm=100+DB=DiplPool+Threads=true+LogDir=.+DbgFl=0x15,rmid=-1344514975,flags=0x0
113105.161:160.160.-1344514975:
ORA-12560: TNS: Fehler bei Protokolladapter
113105.161:160.160.-1344514975:
xaolgn_help: XAER_RMERR; OCIServerAttach failed. ORA-12560.
113105.161:160.160.-1344514975:
xaoopen: return -3
We suspect that we do not set the properties of the connection pool correctly. The
declaration of the pool in config.xml looks something like the following:
<JDBCConnectionPool CapacityIncrement="1" DriverName="weblogic.jdbc.oci.xa.XADataSource"
InitialCapacity="10" MaxCapacity="15" Name="DiplPool"
Properties="user=scott;password=tiger;url=jdbc:weblogic:oracle:srlaptop_aidenbach.muc.sdm-research.de;dataSourceName=DiplPool"
Targets="Marvin" TestTableName="privcust" URL="jdbc:weblogic:oracle:srlaptop_aidenbach.muc.sdm-research.de"/>
Are there any known issues with the XA driver and the versions of oracle and Weblogic
we use? Can someone tell us how exactly we have to define the connection pool or
provide an example?
Any help would be greatly appreciated.
Best regards,
Michael

Hi Michael
Here is an example connection pool tag,
<JDBCConnectionPool
Name="oraXAPool"
Targets="myserver"
DriverName="weblogic.jdbc.oci.xa.XADataSource"
InitialCapacity="1"
MaxCapacity="10"
CapacityIncrement="2"
Properties="user=scott;password=tiger;server=ORCL"
/>
Ensure that the server=ORCL is replaced by server=<what ever the Alias is
defined in TNSNAMES.ORA file>
You dont have to specify the URL for this.
hth
sree
"Michael Wufka" <[email protected]> wrote in message
news:[email protected]...
>
Hi everybody,
we have serious problems configuring the weblogic jDriver for Oracle withsupport
for distributed transactions.
Everything works fine with the non-XA driver.
We tried the suggestions given here before like setting the environmentvariable
ORACLE_SID. However, this does not change the errors we get. We useWeblgic Server
6.1 SP2 with oracle 8.1.7 (client and server) under Windows NT.
When attempting to create the connection pool, we get the followingexception:
Starting Loading jDriver/Oracle .....
<14.05.2002 15:48:30 CEST> <Error> <JDBC> <Cannot startup connection pool"DiplPool"
weblogic.common.ResourceException: java.sql.SQLException: open failed forXAResource
'DiplPool' with error XAER_RMERR : A resource manager error has occured inthe transaction
branch. Check Oracle XA trace file(s) (if any) for database errors. TheOracle XA
trace file(s) are located at the directory where you start the WeblogicServer, and
have names like xa_<pool_name><MMDDYYYY>.trc.
at weblogic.jdbc.oci.xa.XAConnection.<init>(XAConnection.java:58)
atweblogic.jdbc.oci.xa.XADataSource.getXAConnection(XADataSource.java:601)
atweblogic.jdbc.common.internal.XAConnectionEnvFactory.makeConnection(XAConnec
tionEnvFactory.java:200)
atweblogic.jdbc.common.internal.XAConnectionEnvFactory.createResource(XAConnec
tionEnvFactory.java:57)
atweblogic.common.internal.ResourceAllocator.makeResources(ResourceAllocator.j
ava:698)
atweblogic.common.internal.ResourceAllocator.<init>(ResourceAllocator.java:282
atweblogic.jdbc.common.internal.ConnectionPool.startup(ConnectionPool.java:623
at weblogic.jdbc.common.JDBCService.addDeployment(JDBCService.java:107)
atweblogic.management.mbeans.custom.DeploymentTarget.addDeployment(DeploymentT
arget.java:329)
The trace file looks like this:
ORACLE XA: Version 8.1.5.0.0. RM name = 'Oracle_XA'.
113105.161:160.160.-1344514975:
xaoopen:xa_info=Oracle_XA+Acc=P/schamper/schamper+SesTm=100+DB=DiplPool+Threads=true
LogDir=.DbgFl=0x15,rmid=-1344514975,flags=0x0
113105.161:160.160.-1344514975:
ORA-12560: TNS: Fehler bei Protokolladapter
113105.161:160.160.-1344514975:
xaolgn_help: XAER_RMERR; OCIServerAttach failed. ORA-12560.
113105.161:160.160.-1344514975:
xaoopen: return -3
We suspect that we do not set the properties of the connection poolcorrectly. The
declaration of the pool in config.xml looks something like the following:
<JDBCConnectionPool CapacityIncrement="1"DriverName="weblogic.jdbc.oci.xa.XADataSource"
InitialCapacity="10" MaxCapacity="15" Name="DiplPool"
Properties="user=scott;password=tiger;url=jdbc:weblogic:oracle:srlaptop_aide
nbach.muc.sdm-research.de;dataSourceName=DiplPool"
Targets="Marvin" TestTableName="privcust"URL="jdbc:weblogic:oracle:srlaptop_aidenbach.muc.sdm-research.de"/>
>
Are there any known issues with the XA driver and the versions of oracleand Weblogic
we use? Can someone tell us how exactly we have to define the connectionpool or
provide an example?
Any help would be greatly appreciated.
Best regards,
Michael

Best way to implement connection pooling with tomcat4.0?

Hi all!
I need your help:
What's the best way to implement connection pooling (Oracle Database) with tomcat 4.0?
I only found ways to implement it in tomcat 4.1, not in 4.0....
Thanks!
Michael

You can use a Datasource managed by tomcat. Earlier versions of tomcat used Exolab's Tyrex for the implementation of the Datasource API which uses connection pooling. Current version uses commons-dbcp and commons-pool (jakarta projects) I think.
You've got to declare the Datasource in server.xml and then in web.xml of your web app.

Best way to use Sun Web Server connection pooling with Web Application?

I have a number of applications that run Oracle and MySQL queries via Sun Web Server 6.1. I use the Web Server's built-in connection pooling, which works fairly well.
As an interface with the connections I receive from the Web Server, I use a class, which (1) accepts the SQL and database name from a tool, (2) Opens the connection, runs the SQL, closes the connection, (3) puts the content of the result set into a Vector of Hashtables, (4) returns that Vector to the tool.
Why do I use this Vector? That way, in my applications, I don't have to deal with opening connections (or getting them from the pool) and I don't have to worry about closing connections, because that's done automatically by the interface class.
Is this a dumb approach to use? I'm a bit paranoid about open DB connections, because we have had a number of problems where connections would not be closed, go stale in oracle, and clog up the database resources.
Can you suggest a better way to (1) smartly control opening and closing connections, and (2) enabling fast database access?
Sorry, but given this Java/Sun Web Server double topic, I'm going to post the same message on the Web Server board.
Any tips?
dailysun
P.S. For instance, in my tool, I call the interface class in this manner:
Vector results_v = Database.getSelect("SELECT * FROM TEST","database1");
getSelect uses the first string as the SQL and the second string as the jndi name of the Web server's database resource. getSelect does all the context stuff to get a connection from the pool, runs the SQL, puts the resultset into a Vector of Hastables (where each row is one Hashtable), and returns the Vector.

I have a number of applications that run Oracle and MySQL queries via Sun Web Server 6.1. I use the Web Server's built-in connection pooling, which works fairly well.
As an interface with the connections I receive from the Web Server, I use a class, which (1) accepts the SQL and database name from a tool, (2) Opens the connection, runs the SQL, closes the connection, (3) puts the content of the result set into a Vector of Hashtables, (4) returns that Vector to the tool.
Why do I use this Vector? That way, in my applications, I don't have to deal with opening connections (or getting them from the pool) and I don't have to worry about closing connections, because that's done automatically by the interface class.
Is this a dumb approach to use? I'm a bit paranoid about open DB connections, because we have had a number of problems where connections would not be closed, go stale in oracle, and clog up the database resources.
Can you suggest a better way to (1) smartly control opening and closing connections, and (2) enabling fast database access?
Sorry, but given this Java/Sun Web Server double topic, I'm going to post the same message on the Web Server board.
Any tips?
dailysun
P.S. For instance, in my tool, I call the interface class in this manner:
Vector results_v = Database.getSelect("SELECT * FROM TEST","database1");
getSelect uses the first string as the SQL and the second string as the jndi name of the Web server's database resource. getSelect does all the context stuff to get a connection from the pool, runs the SQL, puts the resultset into a Vector of Hastables (where each row is one Hashtable), and returns the Vector.

How to use connection pool with RDBMSRealm

I am having a problem with the RDBMSRealm. The problem is that the connection defined in the .realm_properties file times out after 1 hour. My solution was to use the connection pool defined in the weblogic.properties file, but the realm_proprties are read before the connection pool is created so it did'nt work.Is there anyway of controling the order of which WLS reads various properties?If no, is there any way of setting "autorefresh" on the connection defined in the .realm_properties file?I'am using WLS 5.1, S.P 8, WIN2000 and Sybase. It works fine except for the timeout.Please help-Marius

I've been struggling to find a way to use a weblogic connection
pool or datasource nicely, and have failed with whatever I've tried.
There is a chicken and egg problem here. The connection pool needs
security to initialize itself, and security needs a connection
pool. So that will not work.
I've tried the follwing, which almost worked. Weblogic falls
back to the default realm if your custom realm returns null for
any user or group requests. So if your custom realm is not capable
of reading info from the database, return null. The default realm
will take over, and allow the connection pool to initialize if
you allow everybody (or users defined in the weblogic.properties
file) access to the pool. Then define a datasource which points
to the pool.
After the server starts, security can then use JNDI to look up
the datasource, and all seems well. However, in some instances
(it seems like calls for a bean), where security and jndi can get
into infinite loops where jndi performs a security check when doing
the lookup, so they both end up asking each other for information.
So if anyone knows how to successfully use a connection pool or
DataSource in a custom realm, I would love to know how.
For you, I would suggest you don't try and use a connection pool,
but figure out how to refresh your connection. You can do it manually
by taking your connection, checking if it's valid before using
it, if not, then open a new one.
-d-
Marius <[email protected]> wrote:
I am having a problem with the RDBMSRealm. The problem
is that the connection defined in the .realm_properties
file times out after 1 hour. My solution was to use the
connection pool defined in the weblogic.properties file,
but the realm_proprties are read before the connection
pool is created so it did'nt work.Is there anyway of
controling the order of which WLS reads various properties?If
no, is there any way of setting "autorefresh" on the
connection defined in the .realm_properties file?I'am
using WLS 5.1, S.P 8, WIN2000 and Sybase. It works fine
except for the timeout.Please help-Marius

How To Use Connection pooling with j2sdkee1.3?

hi!
How to use javax.sql.ConnectionPoolDataSource and
javax.sql.PooledConnection with j2sdkee1.3.?
In j2ee1.3's deployment tool,
to specify the resource factories,
javax.sql.ConnectionPoolDataSource is not available.
Please Help me to use Connection pooling.
Dhaya.

Vendor implementations usually have a fair amount of optimization. For J2EE apps, my concern would be using your pool in transactional calls. When you make a transactional call across several beans/methods, the vendor's pool makes sure that you get the same connection each time you get a connection from the pool so that if you want to rollback the work (in case an error occurs), you can. Does your current connection pool support this?

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